PRAGMA foreign_keys = ON;

CREATE TABLE IF NOT EXISTS inbox (
    command_id TEXT PRIMARY KEY,
    tenant_id TEXT NOT NULL,
    tenant_key TEXT NOT NULL,
    command_type TEXT NOT NULL,
    body_hash TEXT NOT NULL,
    body BLOB NOT NULL,
    status TEXT NOT NULL CHECK (status IN ('received', 'persisted', 'rejected')),
    received_at TEXT NOT NULL,
    persisted_at TEXT
);

CREATE TABLE IF NOT EXISTS tasks (
    execution_id TEXT PRIMARY KEY,
    tenant_key TEXT NOT NULL,
    tenant_id TEXT NOT NULL,
    task_id TEXT NOT NULL,
    task_item_id TEXT NOT NULL,
    task_revision INTEGER NOT NULL,
    trace_id TEXT NOT NULL,
    callee TEXT NOT NULL,
    route_policy_id TEXT NOT NULL,
    caller_profile_id TEXT NOT NULL,
    agent_version_id TEXT NOT NULL,
    variables BLOB NOT NULL,
    ring_timeout_ms INTEGER NOT NULL,
    max_call_duration_ms INTEGER NOT NULL,
    status TEXT NOT NULL CHECK (status IN ('accepted', 'reserved', 'running', 'draining', 'paused', 'stopped', 'finished', 'unknown')),
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL,
    UNIQUE (tenant_key, task_id, task_item_id, task_revision)
);
CREATE INDEX IF NOT EXISTS tasks_pending_idx ON tasks (status, created_at);
CREATE INDEX IF NOT EXISTS tasks_tenant_idx ON tasks (tenant_key, status, created_at);

CREATE TABLE IF NOT EXISTS quotas (
    scope TEXT PRIMARY KEY,
    limit_value INTEGER NOT NULL CHECK (limit_value >= 0),
    reserved_value INTEGER NOT NULL DEFAULT 0 CHECK (reserved_value >= 0),
    unknown_value INTEGER NOT NULL DEFAULT 0 CHECK (unknown_value >= 0),
    updated_at TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS reservations (
    reservation_id TEXT PRIMARY KEY,
    execution_id TEXT NOT NULL,
    tenant_key TEXT NOT NULL,
    scopes BLOB NOT NULL,
    state TEXT NOT NULL CHECK (state IN ('held', 'released', 'unknown')),
    created_at TEXT NOT NULL,
    released_at TEXT,
    UNIQUE (execution_id)
);
CREATE INDEX IF NOT EXISTS reservations_tenant_idx ON reservations (tenant_key, state);

CREATE TABLE IF NOT EXISTS outbox (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    event_id TEXT NOT NULL UNIQUE,
    tenant_key TEXT NOT NULL,
    exchange TEXT NOT NULL,
    routing_key TEXT NOT NULL,
    body BLOB NOT NULL,
    status TEXT NOT NULL CHECK (status IN ('pending', 'dispatching', 'published', 'retry')),
    attempts INTEGER NOT NULL DEFAULT 0,
    last_error TEXT,
    created_at TEXT NOT NULL,
    published_at TEXT
);
CREATE INDEX IF NOT EXISTS outbox_pending_idx ON outbox (status, id);

CREATE TABLE IF NOT EXISTS controls (
    execution_id TEXT PRIMARY KEY,
    task_revision INTEGER NOT NULL,
    action TEXT NOT NULL CHECK (action IN ('pause', 'resume', 'drain', 'stop', 'hangup')),
    active_call_policy TEXT,
    reason TEXT,
    idempotency_key TEXT,
    applied INTEGER NOT NULL DEFAULT 0,
    requested_at TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS replays (
    idempotency_key TEXT PRIMARY KEY,
    tenant_id TEXT NOT NULL,
    source_command_id TEXT NOT NULL,
    tenant_key TEXT NOT NULL,
    reason TEXT NOT NULL,
    created_at TEXT NOT NULL,
    UNIQUE (idempotency_key, source_command_id)
);

CREATE TABLE IF NOT EXISTS leases (
    lease_id TEXT PRIMARY KEY,
    scope TEXT NOT NULL,
    holder_id TEXT NOT NULL,
    expires_at TEXT NOT NULL,
    state TEXT NOT NULL CHECK (state IN ('active', 'expired', 'released'))
);
CREATE INDEX IF NOT EXISTS leases_scope_idx ON leases (scope, state, expires_at);